Multi-channel information systems involve data redundancy, which, in turn, requires the implementation of synchronization mechanisms among overlapping databases. This need for periodic data realignment causes data quality issues related to delays in data updates, which can vary across databases and corresponding channels and services. Outof-date data reduce the overall currency of databases and, in turn, decrease their accuracy and completeness. This paper proposes time-related measures of accuracy, completeness and currency and discusses their mutual relationships in multi-channel information systems. 1 Data accuracy, completeness and currency Critical data quality issues are related to the degree of data integration, which is a consequence of design choices on the overall architecture of a company's information system (IS). This paper focuses on multi-channel information systems in which services are typically provided through a variety of channels, including branches, agents, c...